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| From | Cameron McInally <cameron.mcinally@nyu.edu> |
| Newsgroups | comp.compilers |
| Subject | Re: Compiler optimization and floating point operations |
| Date | Wed, 23 Oct 2013 22:55:58 -0400 |
| Organization | Compilers Central |
| Lines | 22 |
| Sender | johnl@iecc.com |
| Approved | comp.compilers@iecc.com |
| Message-ID | <13-10-027@comp.compilers> (permalink) |
| References | <13-10-026@comp.compilers> |
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| NNTP-Posting-Date | Thu, 24 Oct 2013 12:55:15 +0000 (UTC) |
| Keywords | arithmetic, optimize |
| Posted-Date | 24 Oct 2013 08:55:15 EDT |
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| Xref | csiph.com comp.compilers:1010 |
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Hey Abid, On Wed, Oct 23, 2013 at 4:47 PM, Abid <abidmuslim@gmail.com> wrote: > Does back end compiler optimizations affect the floating point > accuracy? Not all optimizations will affect floating point accuracy, but some may. For example, an optimization that makes use of the associative property or distributive property can have an impact. This is the nature of the limited accuracy in floating point numbers. Another common example is the use of FMA (Fused Multiply Add) instructions. Although, using these instructions will most likely lead to better accuracy, since there is only one rounding error applied to the multiply and the add. > Is there any research work in this area? Yes, tons. Search for "floating point accuracy" and you will be sure to find research going way back. -Cameron
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Compiler optimization and floating point operations Abid <abidmuslim@gmail.com> - 2013-10-23 13:47 -0700
Re: Compiler optimization and floating point operations Cameron McInally <cameron.mcinally@nyu.edu> - 2013-10-23 22:55 -0400
Re: Compiler optimization and floating point operations glen herrmannsfeldt <gah@ugcs.caltech.edu> - 2013-10-24 02:56 +0000
Re: Compiler optimization and floating point operations George Neuner <gneuner2@comcast.net> - 2013-10-24 07:41 -0400
Re: Compiler optimization and floating point operations Jean-Marc Bourguet <jm@bourguet.org> - 2013-10-24 15:51 +0200
Re: Compiler optimization and floating point operations "Steven G. Kargl" <sgk@troutmask.apl.washington.edu> - 2013-10-24 16:38 +0000
Re: Compiler optimization and floating point operations christian.bau@cbau.wanadoo.co.uk - 2013-10-28 15:54 -0700
Re: Compiler optimization and floating point operations George Neuner <gneuner2@comcast.net> - 2013-10-24 15:51 -0400
Re: Compiler optimization and floating point operations glen herrmannsfeldt <gah@ugcs.caltech.edu> - 2013-10-24 20:21 +0000
Re: Compiler optimization and floating point operations christian.bau@cbau.wanadoo.co.uk - 2013-10-28 15:50 -0700
Re: Compiler optimization and floating point operations Cameron McInally <cameron.mcinally@nyu.edu> - 2013-10-28 20:41 -0400
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